/*
 * Copyright 2010-2018 Boxfuse GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.flywaydb.core.internal.database.derby;

import org.flywaydb.core.internal.sqlscript.Delimiter;
import org.flywaydb.core.internal.sqlscript.SqlStatementBuilder;

/**
 * SqlStatementBuilder supporting Derby-specific delimiter changes.
 */
public class DerbySqlStatementBuilder extends SqlStatementBuilder {
    public DerbySqlStatementBuilder() {
        super(Delimiter.SEMICOLON);
    }

    @Override
    protected String extractAlternateOpenQuote(String token) {
        if (token.startsWith("$$")) {
            return "$$";
        }
        return null;
    }

    @Override
    protected String cleanToken(String token) {
        if (token.startsWith("X'")) {
            return token.substring(token.indexOf("'"));
        }
        return super.cleanToken(token);
    }
}